emberjs/ember-rails — pull request #278 by mguterl (2013-10-24 19:49:42+00:00)
Title: Update README.md

The current documentation makes it sounds like adding this line is optional.

@mitchlloyd and I just spent a lot of time trying to figure this out. Apparently the defaults are not set and it is required that you specify this configuration option. This was on the current master and current release.